Add configs and board level codes for i.MX6ULL 14x14 EVK. Very similar
board from i.MX6UL EVK. I2C, UART, USB, QSPI, SD, ENET and LCD are ok
to work.
The codes for i.MX6ULL 9x9 EVK is kept. We will add 9x9 build target when
it is needed.
The DDR3 script is using version 1.2:
File: EVK_IMX6ULL_DDR3L_400MHz_512MB_16bit_V1.2_NewDRAM.inc
Test: 3 boards passed memtester.
Build target:
mx6ull_14x14_evk_defconfig
Signed-off-by: Ye Li